2105 Network Interface Module

  • Rugged, submersible enclosure meets NEMA 4X, 6P and IP68 requirements.
  • Stackable together with up to three other Isco 2100 Modules
  • 38,400 bps communication provides speedy setup and data retrieval.
Product Options


The ISCO 2105 module is a network interface that enables communication between many sampling, monitoring and data retrieval devices. It can monitor assets on the network and make intelligent decisions (based on user set parameters) such as powering up samplers and sending alarm messages.

As well as Isco 2100 series flow modules and ADFM doppler flow meters, the 2105 can also be used with equipment from other suppliers that have Modbus or SDI-12 outputs. Aftermarket converters can also be used with the 2105 to give additional input options.

The 2105 uses the modular design used in many of Isco's instruments, enabling it to be stacked with other 2100 series flow, interface, display and communication modules, and an optional built- in cell phone modem allows remote access to stored data or the internet.

Standard Features of the 2105 Include:

  • Can be stacked with up to 3 other Isco 2100 series modules
  • Rugged Enclosure is NEMA 4X, 6P and IP68 rated
  • Can be supplied with various cables allowing many instrument configurations
  • Records and stores temperature data and input voltage
  • Data storage rates can be varied when user-set conditions occur (such as an overflow) allowing the user to retrieve maximum data during exceptional events while conserving power in normal conditions
  • Speedy setup and data retrieval with 38.4 kbps communication

Manufactured by: Teledyne ISCO
Model: 2105 Network Interface Module

Services offered for this product

  • Sales
  • Rental
  • Installation
  • Calibration
  • Maintenance


CSO, cMOM and I & I and other collection system monitoring
Permit compliance and
Capacity assessments
Monitoring of storm water
Non-point source monitoring
Stream and river gauging


2105 Network Interface Module
Size (H x W x D) 2.9 x 11.3 x 7.5 in. (74 x 287 x 191 mm)
Weight 2.0 lbs. 0.9 kg
Material High-impact polystyrene, stainless steel
Enclosure NEMA 4X, 6P IP68
Temperature Range -40 to 140° F (-40 to 60°C)
Power Required 12 VDC nominal (7.0 to 26 VDC), 100 mA typical, 1 mA standby, 2 A maximum.
Power Source Typically an Isco 2191 Battery Module, containing 2 alkaline or 2 rechargeable lead-acid batteries. (Other power options are available; ask for details.)
Typical Battery Life Using 15-minute data storage interval Energizer® Model 529 alkaline, 15 months; Isco rechargeable lead-acid, 2.5 months
Program Memory Non-volatile, programmable flash; can be updated using PC without opening enclosure; retains user program after updating
Data Handling and Communications
Data Storage Non-volatile flash; Retains stored data during program updates; Capacity 798,000 bytes (up to 158,000 readings, equal to over 270 days of rainfall, temperature, conductivity, and pH readings at 15-minute intervals, plus input voltage readings stored at 12-hour intervals)
Data Types Flow Rate, Level, Rainfall, Conductivity, Dissolved Oxygen, Temperature, pH, Percent, Velocity, Volume, Total Dissolved Solids, Salinity, Phosphate, Ammonia, Nitrate, TOC, COD, Total Suspended Solids, Sludge Index, Sludge Volume, SAC, Turbidity, Load, Input Voltage, Wireless Signal, Rainfall Intensity, Specific Conductance, Chloride, Chlorophyll, O.R.P., Ammonium
Storage Mode Rollover; 5 bytes per reading
Storage Interval 15 or 30 seconds; 1, 2, 5, 15, or 30 minutes; or 1, 2, 4, 12, or 24 hours. Storage rate variable based on level, velocity, flow rate, total flow, or input voltage
Data Retrieval Serial connection to PC or optional 2101 Field Wizard module; optional modules for spread spectrum radio; land-line or cellular modem; 1xRTT. Modbus and 4-20 mA analog available.
Software Isco Flowlink for setup, data retrieval, editing, analysis, and reporting
Multi-module Networking Up to four 2100 Series modules, stacked and/or remotely connected. Maximum distance between modules is 3,300 feet (1000 m)
Serial Communication Speed Up to 38,400 bps
Enclosure NEMA 4X, 6P (IP68)
Batteries Two 6-volt Energizer Model 529* alkaline (26 Ah capacity) or Isco Rechargeable Lead-acid (5 Ah capacity) recommended. *Note - Energizer 529 ER and EN529 do not give specified life.
2191 Battery Module
Size (H x W x D) 6.0 x 9.6 x 7.6 in. (152 x 244 x 193 mm)
Weight (w/o batteries) 3.2 lbs. 1.4 kg
Materials of Construction High-impact polystyrene, stainless steel
Enclosure NEMA 4X, 6P (IP68)
Batteries Two 6-volt Energizer Model 529* alkaline (26 Ah capacity) or Isco Rechargeable Lead-acid (5 Ah capacity) recommended. *Note - Energizer 529 ER and EN529 do not give specified life.